Recorder



Nov. 9, 1943.

F IRE ALARM J. R. HARRINGTON RECORDER Filed April 2'7, 1940 2Sheets-Sheet 1 2i was my 2/ PM 10:05

R Q firuren't on (la/mes Z? Harm/3 1m MES/0 Nov. 9, 1943. I J. R.HARRINGTON macommn Filed April 27, 1940 2 Sheets-Sheet 2 i Ha ms/i?Harhiggl'o/ fljim la 61110, assignor to 7 many, S116; 01110, a, gorp a.i V r r V V (014 345215 The present invoritlon r sg'norall'y so: P tionat right angles to the axis of the type wheels. ow rs, and has?pdfllclllfif rfeiftfice to-tifi the new embodiment of recorder which Iwheel ream-pleasaflasit'ed g dimbse 'l'ierein, I reverse theseprinciples of operoid'pn" a paper-sa s or} In'fthe' prentionbs'employing only one type wheel instead is at 5 of a plurality of typewheels; and by employranges to mass to feleicifii'lcai signalling sysin:aplurality of p 'lnting platens instead of only aim "mic? whichartrimsmlttcd #0895 6! one platen. In one embodiment of my improvedimpulses'whlchf rlesignite coniiltions Eiidfifltrgfit moorcler hereinshown, the paper tape is adcrtain signalling stallions or a sassin anvanoaiin a direction parallel to the axis of the mini also station '51typa' wheel, and in another embodiment it is trqi'lsiilittjjf'filiifi istransm lttinitfiis condltion advanced in a direction at right angles tothe sign fiowfe n it fie nnoej'stood thht i'his type whesl. Anotherdistinction resides in the 'jncrcljr one lil lustrsgtiwg e nsc of" therecorder; fazt that the selecting function is performed with ii fi'thitlii is timbre: oi iral-ion otheif rspcct to the plurality orprinting platens, wheresitnations. I a V V 15 by one platen is employedfor recording the con- In 'elcctrical signalling 0g thg'class 'reditlondesignating portion or the signal, and anfcrred'to, eaoi'r gornpiptosignal mnally comprises other platen or platens are empl yed forrecordfile station designating portion of the signal fiiurtherdistinction is that a plurality of suc- 20 cessive printing operationsare performed on the V 7 V V U tape during the performance of a singleconditton oi-poweroifffctc, slgnslling cycle, 1. e., as each group ofsignal 'clitiojn designating annulment; 'tfiili I impulses arrives atthe recorder, the printing imr'icsignating components, 7 iii-assigncorresponding threto is immediately numerals or ictters or hotngsnbefore the next group of impulses arrives. nDIf'or A 38'." The stationdssi *ffiy'new emhodiment'of recorder is more siml nfln i may fi mfi fiOff m nim. l I pip and less expensive to construct than the conigi s,CtGPQIlfl-MBYQPUQfifiQ volitional type of recorder referred to,principally tions 'transmltting s lznalsio ,tll r, by reason or the useor one type wheel, and also seve al comm n r fr s l'i rr llorix miflathe first componcnt m y do e anyone of apreocterminpd sci; oi cogitlit rs a rmownfltb oi wi mnstatioa' commas whoring the selecting functionperformed enprececlo or sllgcecdjhe; condltio fir-sly electrically,rather than largely through c mpon nt in, iihsiwiilil 7r sompllcatedmechanical selecting mechanism.

N nnerons other distinctions, advantages, ancl (meets of the presentinvention will appear from on following detail description of onepreferred ombocliment of this new recorder. In the scambanying drawingsillustrating such embodiment: Figure 1 is a diagrammatic view whichschematically illustrates in perspective the type wheel, paper tape,printing platens, etc.; Figure 2 is a front view of a portion of theroup ii a lamina scnventlqna tfi rmsafifi time w w. 1',

for the condition dssisnafiia th ee othor type whesls ters thereon torthe transmit-11 o pomni; Tnispr'iar iormg olup n he principladirperfgrgiii'lg elggflni iullc paper tape, showing typical printedimpressions tion with regard to tlis iirioiwhc V @Mljfllb thereon; andsuc assive whe ls aresela tesl to espopd in iurn Z 3 is a diagrammaticview, similar to to difierentg'gmnns pisode. V gsr lil sgjlgl s Figure1, showing a, modified embodiment of my recorder.

' Kelsi-ring to Figure 1, the single type wheel or prior than isfisedsssns rus si lrsls ssl I a so actuated once rgsi is indicated at l, thepaper tape at 5, this only s I t ahii'two printing platens at B and I.Any conhave been sat V Z a T flu'thehm prioiiiot n gfls'ec fdkropcratosupon beyond the type wheel I, this time stamp comthe p inninla of the;priiiid lmpi'esslons prising the conventional type wheels tor printinupon a. paper tape'iwblgh is not; .advai cgfl this year, month. day, andtime of day that each sitar the c late ,slmfllzllas Benn 'ifinprin mastis received. It wfll be noted that the large thgraqm ainjiwmohi mug ma am-sf V 15 extends under this time stamp to coact verrfiibnal form oftime stamp 8 is disposed just contact spring 52- upwardly to ride onthehigh surface ofthe cam, thereby: opening che circuit between contacts52. and ESL and closing acircult between contacts 02 and 54,,the lattercircuit extending to one end of the electromagnet' 27' assoclated withthe other platen I;

The other cam 4'8 has a cam rise or dwell 55, upon the front endof'whicha contact spring 56 bears in tlhe normal) or nestored' conditioner therecorder. As long as this middle contact sprin 5618 riding: on; the camdwell 55, it is maintain ing a circuit connection through upper contact51 with oneend of the electromagnet 82 oil control relay 6i; but as soonas this contact spring drops oil the tmiling and 0t the cam rise theatoresain circuit connection through contact 51 is broken and anew'circuit connection i established from intermediate contact 58 tolower contact 513 and then to the vibratory or'homing con tacts M, 45associated with the paper feedelectromagnet 3B.

The control or cycling relay 5! comprises the aforementioned:electromagnet M and any suitable armature apparatus responsive theretoand arranged toactuate the plurality of contacts 63, 64, 55, etc. In thenormal condition of the relay ill, the electromagnet Ell is deenergized.the contact 53 stands separated from the contact 64, and said lattercontact 64 stands engaged with the contact 55, but upon elrergizati'onof the relay, the contact EI-moves over and engages the contact M, andthereafter separates contact 6t from contact 55. Similarly, contact- 56isnormally separated from contact i l but moves into engagement withsaid latter contact upon: energization of the relay; and the same is.also true of the similar pair ofcontacts 68' and ESL Contact H normallyengages outer contact H, but. upon energization of. the relay, itseparates from contact l2 and engages contact 13.

Signaling relay 15 comprises an electromagnet 15 and any suitablearmature apparatus responsive theretoand adapted toactuate the twomovable contact springs 11 and 81. Under normal conditions, theelectromagnet 16 remains continuously energized, ll e., it iscontinuously energized between recording cycles, and hence under thesenormal conditions the contact spring H is held to the right againstcontact spring It, and, likewise, contact spring is held to the rightagainst contact spring 8-2. Upon. deenergization of the electromagnetl6, occurring in the recording cycle, the contact spring ll drops backto the left against contact spring 19,, as indicated in dotted lines(this being a dead or open circuit position for contact l1), and,similarly, the movable contact spring 81 drops back against the contactspring 83.

The control relay El and the signaling relay 15 may be a. part of therecorder structure, or they may be disposed at any desired point orpoints removed from the recorder.

This improved recorder, at least in its broader aspects, is capable ofresponding to practically any form or relation of coded impulsestransmitted in any type 05 electrical signaling system, such as firealarm systems, supervisory control systems, automatic telephone systems,etc. Furthermore, my improved recorder may be em ployed in systems usingspring driven transmittels, or it may be employed in systems usingelectrically driven transmitters. Moreover, it may be employed insystems where the signal impulses themselves supply the operating energyfor the recorder, or it may be employed in sysall terns where a localbattery or other source of current serves to: supply the operatingenergy luv the recorder, this local source of energy being under thecontrol of the signal impulses.

Certain operating advantages are obtained when the recorder is employedin a signaling system of the general-class disclosed in my prior PatentNo. 2,164,324, issued July 4, 193% Systems oi: similar nature are alsodisclosed in my prior PatentNm 1.950510% and in my prior Patent No.2,202,853, issued June t. 1940; For the sake of a complete, illustrativedisclosure, 1 shall describe my improved recorder as employer-ll in asignalling system of the type shown in the above-mentinned Patent No.2,164,324, it being understood. however, that by such: description; ofthe recorder in this. type of signalling system I am not necessarilylimiting the recorder to use with that type at system. The signalcircuit denoted S in the drawings oi the. present. application isintended to correspond with the signal circuit S. disclosed in saidprior patent, it being. noted that this signal circuit is connected withthe electromagnet 15 at the signalling relay 15. The operating energyfor the recorder is supplied from a local battery, which corresponds tothe positive battery bus P and negative battery bus N of the priorpatent. The positive battery bus P is connected with one terminal of thestep-up or advanclng clectromagnet. l5, and also has branched connectionwith the contact ll of signalling relay [5, with the contact d1 oicontrol relay 6i, and with tloe middle contact spring 56 which isresponsiwe to cam 63. The negative battery bus N is connected with thetwo contacts. 63 and I2 of the control relay 6.11. During the operationof the signal system, current. impulses of constant frequency are fed tothe recorder and to other parts of the system from one side of thebattery through the mediim of a pulsing device or oscillator which isdiagrammatically indicated at 31. This oscillator is described in detailin my prior patent above identified, and is preferably connectcd withthe negative side of the battery for impressing negative currentimpulses of constant frequency on condwctor I86 during the operation 0!the signal system. These negative current impulses are conveyed throughconductor l84 to contact 8! of the signaling relay l5 and to contact 13of the control relay it. During the operation of the recorder, theencrgization and deenergization oi electromagnet 16 of relay l5 occurduring an open circuit condition of said oscillater 31.

Referring now to the operation of the apparatus, in the normal conditionof the signaling system and recorder, the type wheel l stands in thenormal position to which it has been restored upon the completion oi thelast recording cycle; the cams 4'! and 68 stand in the positionsillustrated; the control relay 51 is in a deenergized condition so thatall of its movable contacts 63, 65. 68, and II stand in the positionsillustrated; and the signaling relay I5 is in an energized condition sothat its movable contacts 11 and BI are held in their attractedpositions, as illustrated in full lines. The type wheel may have a blankspace or may have any desired printing indlcia, such as Test 0,"normally disposed in the printing position.

When any one of the transmitters of the system starts to operate, thesignalling rotor of that transmitter arrives at a signalling positionwhich die-energizes the signal circuit S and the signalling relay 15.This allows contact 11 to separate from contact 18 and to engagecontact", and allows contact iii to separate from contact 82 and toengage contact", as'indicated by the dotted line positions of bothmovable contacts 11 and B I. Concurrently with the starting oi thesignalling transmitter, the oscillator 31r-alsc starts, and thereaftertransmits negative-current impulses to therecorder throughout the entirerecording cycle. When contact-ll engaged contact 83, it immediatelytransterred these negative current impulses to contact 65 of controlrelay 6!, one of such impulses being conducted' trom contact 65 throughcontact to one terminal of the relay winding. Positive battery polarityis normally impressed'on the otheriterminal or this relay 'wlnding=frompositive battery-bus through contacts and 51 so :longasthe contact 56rides on the raised cam dwell 55. Hence, the winding 62 of relay Si isenergized by this negative impulse received from-the oscillator, and insuch energization "the contact 63 is brought against contact 61, andcontact 64 is moved out of engagement with contact 65, whereby the relay6| locks itself up until the'completion of the recording cycle. Thiswill be evident'from the fact that when contact 63 engages contact 64 acontinuous supply of negative polarity isfed from negative'battery busto the relay winding 62, independently of theimpuises from theoscillator 31, and the winding 62. remains energized until the 'contact56 drops oil the cam dwell-55 and breaks positive supply through"contact 51, at the end of the recording cycle;':The energize.- tion ofrelay'Gl also moved contact 66 into engagement with contact 61, movedcontact-68 into engagement with contact 69,'and movedcontact ll out ofengagementwith contact 12 and into engagementwith contact 13.'Theengagement of contact 65 with contact 1 serves to conduct positivepolarity to the terminals of three difierent electromagnets, to wit:positive polarity is conducted from contact 66 through ribbon reverseswitch 33 to one or the other of the ribbon advancing electromagnets 3|or 32; positive polarity is also conducted to one terminal on the typewheel releasing electromagnet 22; and positive polarity is alsoconducted through contacts 52 and 53 to one terminal of the printingelectromagnet 26. However, neither of these electromagnets is energizedat this instant because the open circuit condition between contacts 8!and 82 of signalling relay prevents the negative impulses, transmittedfrom oscillator 31. from being conducted to the other terminals 01'these electromagnets. The engagement of contact 68 withcontact 69, uponthe locking up of control relay 6i. does not at this instant conveypositive battery polarity to the lower terminal of the paper feedelectrom'agnet so because contacts 68 and 69 are connected in serieswith contacts H and T8 of signalling relay l5, and, at this time, thesesignalling relay contacts 11 and 18 are open.

The movement of contact Bi out of engagement with contact:82 and intoengagement with contact 83, upon the initial de-energization ofsignalling relay l5, established a circuit from negative oscillator 31up to one terminal of the type wheel step-up electromagnet IS. The otherterminal of this electromagnet has permanent connection with positivebattery 'bus P. Hence. this electromagnet is energized successively byeach negative oscillator impulse, for imparting step-by-step advancingmotion to the type wheel 4 as long as the signalling relay 15 retiveoscillator impulse mains de-energlzed. Thus, the type wheel will beadvanced one step or any desired number oi steps for this firstor.initial component of the signal, depending upon the coded arrangementon thesignalling rotor of the transmitter now operating. Assuming thatthis first component of the signal is the condition designatingcomponent, and that the condition to be signalled is Fire alarm, thenthe type wheel 4 is advanced just far enough to bring that particularlegendof the row of legends l2 into the lowermost position on the wheel;corresponding to the printing position. The advancing motion of the typewheel is stopped at this point'by the reenergization of the signallingrelay 15 over signal circuit 8, the resulting movement oi the relaycontacts 11 and 8| back totheir full line positions interrupting thetransmission of negative oscillator impulsesfrorn conductor I throughcontacts Bi and 83 to the electromagnet IS. The attracted movement ofcontact 8i back into engagement with contact 82 results in the nextnegative oscillator impulse being transmitted to the ribbon advanceelectromagnet ill or 32 (depending upon the position in which the switch33 is then standing); to the printing electromagnet 26, and to the typewheel release electromagnet 22. Upon receiving this negative osciilatorimpulse. these three electromagnets are all simultaneously energized,because relays 31 or 32 and 22have previously been receiving positivepolarity through control relay contacts 68 and 61, and printingelectromagnet 26 has previously been receiving positive polarity throughcontacts 66 and Bl and through contacts 52 and 53. 'The energizatlon ofthe electromagnet 3| or 32 imparts advancing motion to the inking ribbonll through 'any'suitable construction of ribbon drive mechanismf Iheenergization of the electromagnet 26 results in a printing actuation ofthe relatively long platen 6 which, in a single stroke, prints thechronological data set up by the time stamp B and also prints thecondition designating component of the signal, represented by the legend"Fire alarm." The type release electromagnet 22 is energizedsimultaneously with the printing electromagnet 26, but, owing to thedelayed action established in the electromagnet 22 by thecopper sleeve23. the holding pawl 2i isnot released until after the printing platen-6has had opportunity to make its printing impression.

At the same time that signalling relay contact 8| engaged contact 82 andtransmitted a negaup to the three aforementioned electromagnets, theother contact ll of this same relay engaged 'contact 18 and transmittedpositive battery potential through contacts 68 and 69 up to thelowerterminal of the paper feed electromagnet 38. The other terminal of thiselectromagnet 38 has connection through control relay contacts H and 13with the negative oscillator bus I84, and hence this same negativeoscillator impulse which energized the electromagnets 22, 2G, and 3i or32 also energizes the paper ieed electromagnet 38. However, aspreviously remarked, it is not the energization of the electromagnet 38that imparts advancing motion to the feed roll 35, but rather it is thede-energization of said electromagnet that operates through thedownstroke of the advancing pawl 42 to advance the feed roll, and hencethe printing electromagnet 26 has opportunity to de-energize(concurrently with the de-energization of the electromagnet 38) and theermt ne e e en 6 ha eeee ttexsitxt9 e e? lem eut ee eneesemeet witMh.B3361? iq re the, eefl tn 1 3 ee m sm. 99m? h reo t n ed n ee t new? tae ix i -Kiel ad an n m tl n of he beget. reeqlt ee tw n t e in l dew ete eee t Pe ""1Y 9M me e the ta e e Sher-t ieteeeeg ree skeeW ;t i9;-mple. y he dl teeee. betwe n time b areetete n the enem t ee eesnetipwee a zet t e et rj l th we:

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6 asserts;

printing platen. Thefpaper tape i'fis fed from any suitable supply roll,such as a roll 35, and'is of sufficient width to span thelength of th'e'sin'gle type drum 4 and also the time stamp fl. The inking ribbon I Itravelsbetween the'upper surface of the paper tape 5' and' the lowersurfaces of the type drum 4 and time stamp 0,jthis inlging ribbonpreferably travelling in a dlrectibn'parallel to the axis of the typedrum, althou h this is not essential. One end of the type drum isprovidedwith the annular 'row hf type legends or other indicia 12 fordesignating conditions, substantially as described pf the embodimentillustrated in Flgurel. The other end portion of the type drum has a'plurality of annular rows of type characters for designating thelocationof the station transmitting the "signal; If the numerals designatingthe'stations.extend into the hundreds range, three such rowso'i' 'tyi5enumerals are provided, the. row ,Iiihf. "designating the hundredsnumerals the row'liit designating the tens numerals, and the rowilfluide'signatihg the units numerals. This type 4 is; given stepby-stepadvancement by the successive ener'glza tion of the advancing or stepu'p elec tromagnet l5 acting through the armature and pawl mechanism "5to impart movement Ito wheel I! secured to the type drum, in theishrnfmanner as described thjiecetlingeniboch merit. Such advancing motioniiiparted 'tcijthe type drum is in opposition to 'thefalctio of atorsion spring 18 which, r gi iytenasjto Ignite the type dru'rn'back toa pre dterinin d'homefor normal position, as determinedf'byliii'stopbathe described of the precedlfigi ehabodiment, the type drum is held ineach advanced phsitiori hy ajre leasable holding pa'wi'fl responds to fareleasing electromagnet 22, semes er having a. copper sleeve 23 orothersuitablearrangement made so as to be slowto 'operate a ndsiow torelease. j J The long printing platen 6 istarranged fto coact typedrur'n engaging a'statiopery stop. Also, "as

with the fcircularrow of condition, designating legends l2, and with thetime ta p c, in Ithe mi etrate .-caveats remarked, each ring.ofnumeralqharacters (31a, 1 3t, and I311 is provided with an individual printingplaten Ih, 1t,and l'u, respectively. These platens are actuated bysolenoid cores 25h, 25t and 25a which respond to the.ene rgization ofelectromagnets 2111, Mt, and 21a, respectively.

The feed of, the paper tape 5', which-isina direction at right angles tothe type Q as pre viously remarked, is effected by any suitable feedingmechanism, preferably in the fgrmpf a feed roller 36a which is held incontact with-thepaper tape by the spring-pressed roller 36b, QI'he feedroller 36a is adapted to impart feeding motion to the paper tape 5'following ;the final printing operation performed by the-last actuatedprinting platen. The printing platen last to be actuated will ordinarilybe either the condition designating platen 6 or the unit numeralplatenIn. In the illustrated embodiment, I haveassumed that the latter platenIn is the last platen in the series to be operated, and, accordingly, Ihave shown the mechanism which actuates the feed roller 36a as beingresponsive to the core 21a. of

that platen This core has connection through a link 9| with an operatingarm or lever;39a having one end mounted on a stationary pivot 92. Theother end of said lever carries an advancing pawl 42a which is adaptedto impart step-,b'y-step advancing movement to a ratch t wh el 01inoperatlvely connected with the paper feed roller 06a. A sprmg'woa'normally tends to hold the lever in lts mwer retracted position. Theouter portion flat the lever 39a carries an insulating button 93 whichis adapted to strike a spring cont'a't 'fid when the lever reaches theupper limit of its movement. The button striking this spring contact SImoves this contact spring upwardly away from a lower-'coacting contactspring 95. therebyopening" a control circuit between these two contactsprings at the instant that the lever 33:: reaches the upper limit ofits motion, this circuit opening functioninterrupting the lockeduprelation of relay 6i, as will 'be later described. Attentiorrisdirectedto the fact that no advancing-motion isqir'nparted to the feed roller36a during the upstroke of the lever 39a which follows from'theenergization of electromagnet 21a, but that the feeding motion isimparted to said roller 36a only after the conclusion of the printing'operation effected by platen Tu, it being the downward'motion of pawl42a impelled by spring 40a which imparts advancing motion to the feedroller. Normally, the contact springs 94 and 95 are inengage'm'ent,being only separated morn entarily when th lever 39a reaches the upperlimit of-its'rhotion. In lieu of a mechanical instrumentality l's'uchast he lever 39a, I may employ electrical jriearis responsive to theplaten in for advancing the fpaper tape 5' and for momentarily sepaiating'the contacts 94-95.

The selectiveenergization of the platen actuatirig electrolhae'nets 26',21h, 21t, and 27a is V responsive to automatically operating sequence orselecting switch means which may be embodied'in" vafldiis 'forrns ofswitch apparatus. In'the diagrammatic illustration shown, I employ fo'urconcentrically arranged cam lobes 96, 9 1, 98, and 98$ each controllingcooperating con tacts 95cT9Tc, 98c, and 99c, respectively. One contactof each of the aforesaid pairs of contacts is tappe'd or: a commonconductor [0| leading frofn'contact of relay ill. The other contacts ofeach of the'se pairs are connected through conductors 'I02, 103, I04,and I05, with their respective electromagnetszt, 27h, 2lt, and Nu. Theopposite terminalsof all four electromagnets havetapped connection witha common conductor" I06 extending from contact 82 of signaling relay'15. Referring again to the cams 9699, these are all rotatedsimultaneously through a common shaft indicated at Ma. The four camlobes areangulairly separated a distance of so that each one-quarterrevolution of the shaft 496: will result in a selecting function forplacing the next eiectromagnet in circuit to be energized. The shaft 49ais arranged to have these quarter revolution advancing steps impartedthereto through a small pinion 109 which is mounted on the shaft and isdriven from a relatively-large spur gear I meshing therewith. Thegear-wheel Ill isgiven a step-by-step advaricing' motion through aratchet wheel 43b which is actuated by an advancing pawl 42b carried by'the armature 39b and responding to the electromagnetltb. The upstroke ofthe armature 39b merely moves the pawl 42b up to the next teeth of theratchet wheel 43b, the wheel not being advanced until the electromagnet38b is deenergized,'whereupon the spring 40b restores the armature andimparts the advancing motion to the ratchet wheel. As previouslyremarked. the relation of the gears I09, I. and the number'of teeth onthe wheel 43b is such that each decncrgization c. cclmrnavn 7 results incaresses the cam assembly being advanced one-fourth '0! a revolution forbringing the next succeeding cam into circuit closing position withrespect to its contacts. The conductor extendin from contact 66 ofcontrol relay G l has connection through conductor Hi1 with oneterminator type release electromagnet 22 one one terminal of the camstepping electromagnet $81). "The conductor I06 which extends fromcontact 82 of signaling relay has connection through conductor I06 withthe other terminal of said tyipe release electromagnet Q2 and said camstepping electromagnet 38b.

The remainder of the wiring substantially corresponds with thepreviously described embodi- 1 ment. The control or cycling relay BI andthe signaling relay 15 may be electrically connected in the systemsubstantially as disclosed in the preceding embodiment, or these relaystructures may be simplified and connected in the recorder system asillustrated in Figure 3. The signal circuit S is connected with theelectromagne't T6 of signaling relay l6, and contact 81 'of said relayis connected through conductor 484 with the oscillator 31, substantially-as 'describ'ed'of the preceding embodiment. The signaling relay i6 isnormally energized, and in 'suoh'enereiaed'condition the contact 8|occupies the full line position in engagement with contact :82 whichestablishes a circuit such that negative impulses from this oscillatorcan be effective through conductors I06 and 1113' upon the .platenactuating electromagnets and upon type release electromagnet 2'2 and camadvancing 'electromagnet 3811. Upon the deenergization of the signalingrelay T5, the

movable contact ill drops back into the dotted line position inengagement with contact 83, thereby establishing a. circuit throughwhich negative impulses from the oscillator are made eriective on thetype wheel step-up-electromagnet l5. Positive battery terminal P ispermanently connected with the other terminal of the typ wheel step-upmagnet l5, and is also connected with contact 51 of control relay ti.Negative battery terminal N is connected with contact 63 of controlrelay 5|. Contact 54 of #said latter relay is connected with one end ofthewinding 62 of said relay, the other end of said winding beingconnected through wire I08 with contact spring 95. The cooperatingcontact of relay *Gl is connected through wire Hi9 with back contact B3of the signaling relay 15. The ribbon actuating electromagnets 3| and3-2 which drive the inking ribbon l-l alternately 'in-opposltedirections are connected through ribbon travel reverse switch 33 andconductor Illl to-contact 66 of relay GI, and are connectedat-their'other ends through conductor ill and conductor 08 to frontcontact 82 of relay 15.

Referring now to the operation of this -form of recorder, the type wheel-4 may have'a blank space or may have any desired printing indiciasuch'as "Test 0 0 0 normally disposed in the printing position. When anyone of the transmitters of the system starts to operate, the resultingdeenergization of the signaling relay 15 allows contact ill to separatefrom contact 82 and to engage contact 83. The oscillator 31, which isset into operation with the starting of the transmitter about totransmit a signal, sends negative impulses through contact-8i to contact83 of relay 15. The first of these impulses is effective throughconductor Hi9 and relay contacts-65 and G4 to energize the electromagnet62 of relay 6|. the electromagnet 62 halving positive=polarity=im=pressed thereon at this time through release contacts 94 and 85. Theresulting energization of el'edtromagnet 62 brings contact 63 intoengagement with contact on and locks up the relay 6 I. as described ofthe preceding embodiment. The energizatldn of relay 6| also completed a.circuit through contacts 66 and 51 Eur conducting positive polacity tothe calm actuated selector Contacts WW, this positive polarity beingalso otmdnctod through wire I111 to one terminal of type releaseleleotrbmssgnet 22 and to one terminal of 0am stepping electromagnet38b. The impulses transmitted from oscillator 31 are also transmittedfrom relay contact -'83 up through conductor bid to the who step-upelectromagnet IS. the other terminal of this electromalgnet havingpermanent connection with positive battery polarity through conductorM3. The resulting energlmtion of electromagnet lz5 one or more times,correspondmgtothe-code designation of the signal box then operatnrg,sets up the type wheel '4 to a cortcspondmg position. As described ofone iprecediflg embodim'ent, the first signal impulse or impulses may heemployed to set up the corresponding condition designation i2, or, a:-temntelmit may be ed to-set up one of the station designating numeralsIan-I311. It will be assumed that the condition designation i2 is firstsetup for the printing impression. When the type wheel '4 is in thisdesired position, the mnengization of stgnaling relay 15 moves contacton into engagement with contact =82 so that the neat succeeding.vlmlpulse from the oscillator 81 is directed up through conductor 106to the upper ends or the platen actuating electromagnets 26, I'm-21a,andalso through conductor lllfi to the other terminals of type releaseelectromagnet 22 and cam steppingelectromagnet 38b. 'Ihc illustratedpositions of the :cams 86-99 represent their normal positions, and itwill therefore be seen that at this time -positive polarity is beinconducted through contact springs 96c to the lower end of .platenactuating electromagnet 25. Hence, this electromagnet is energizedimmediately upon receiving such negative current impulse tromosoillator81, with the result that the long .platen 6 is impelled upwardly to makethe printing :impress'ion of the lowermost condition designating legendand also of the time stamp B. lBecause'of the slow action of the typerelease eleo't'romagnet 2-2, theprintingimpression is made before theholding pawl 2| is retracted for allowing the type wheel to be restoredto normal position. The energizatlon of cam stepping electromagnet 8% onthis same oscillator impulse merely moved armature 39b upwardly forefiecting eneasement with the nexttoo'th of the ratchet wheel tilb, theratchet wheel-and cams not being ady'anced until the cessation of saidcurrent impulse. Upon the cessation of this impulse, the cams areadvanced tomove cam lobe 96 out from under its'contacts c, opening thecircuit at these contacts, and to move the cam lobe 91 into operativeposition beneathiis respectivecontacts 910, thereby closing the circuitat these latter contacts. Suchplaces conductor l'lll in communicationwith conductor Hi3 leading to the lower end of the platenactuating'electromagnet 21h.

This same general operation is now repeated for setting up the typewheel 4 to the appropriate hundreds position of the hundreds row ofnumerals lflmthen to the appropriate tens designation of-the tens rowoi-numerals lit, and finally t m appropriate units designation of theunits row of numerals i311, the successive printing platens lh, It and1a being successively actuated following the setting up of the typewheel into these hundreds, tens, and unlts'positions. The successiveadvancement of the cams 96*99 selectively placed the platen actuatingelectrcmagnets Zlh-Ilu in circuit with conductor II, in the same mannerdescribed above in connection with cam p96 and contacts 960. Theenergization of the units printing electromagnet 21a brlngsabout thefinal printing operation for that signaling cycle. As previouslydescribed, the upward movement of the core 25a in this electrcmagnetmoves the paper feed advancing pawl 42c upwardly to engage the nextsucceeding tooth of .thesratchet wheel 430. on paper feed roll 36a. Thissame current impulse :also energized electromagnets 22 and 88b. Theupward'motion of'the'lever 38acaused a separation of releasecontacts 84and 95 for breaking the lock-up circuit 108 of control relay 6!, but thebreaking of this lock-up .circultdid not occur until afterelectromagnetwfi and 381: had been energized, and therefore the holdingpawl 2| and armature 39b perform their intended functionsnotwithstanding thelseparationof relay contacts 66 and .51. The downwardmovement of lever 39a upon the cessation of said last, impulse fromoscillator 31 causes the paper feed roll =36a to be rotated foradvancing the paper tape fi' through the appropriate distance forbringing the next succeeding printing .area into .position beneath thetype wheel 4'. The cessationlci that impulse also operated thecarns96-99:to restore cam lobe 96 to-its normal position under. thereontactsprings 96c,.as illustrated. The recorderis now back in the normalcondition that itwas-in at the start of the recording cycle.,--.. .11211 Certain operating -advantages. are obtained when the embodiment. ofrecorder illustrated in Figure 3 is employed in a signaling system, ofthe type shown in my aforementioned PatentlNo. 2,164,324, as hereindescribed. J Nevertheless it will be understood that by thusdescribing'this embodiment of my,recorder as used in such; type ofsignaling system,I,am not necessarily limit? ing the recorder to usewith thattypelofsystem. With regard to theforn'iaof recordproduced, '1preferably make inked impressions onsa paper tape as shown, but eitherembodimentzofethe invention might be modified to make impressions oncarboned paper, wax coatedLpapenor-other miscellaneous treatedtapesych'arts etcu uWith regard to the cycling of either embodiment" oi.the recorder, this is not dependent upon a dell.- nite predeterminednumber 01' digits or impressions, totalling, for instance, one conditiondesignating digit or impression and three numeral digits, but couldconsist of any number of digits or impressions not greater than thenumber of steps of cam 48 of Figure 1, or "of cams 36-99 of Figure 3.For example, if, after the printing of the condition designatingcomponent of the signal (such as Fire alarm"), only a single numericaldigit should be set up and printed, signalling relay 15 would remainenergized and earns 41-48 (Figure l) or cams 96-99.(Figure 3) wouldcontinue to advance at a speed'determined by the oscillator 31 until, inthe case of Figure 1, contact 58 wouldseparate from contact 51 andengage contact 58, whereupon'the recorder would complete its ownsequence. .Cam 48 is not limited in the number of stops it wouldnecessarily have to take before completing its cycle, as it could bearranged to accommodate any practical length of signal. In the case ofFigure 3, the units platen 'lu will always be operated as a finalprinting operation, irrespective of whether the type wheel has beenactuated for setting up any particular units numeral, and the cessationof the current impulse which effects this printing operation alsoresults in the cam stepping electromagnet 38b restoring the cams 96-99to normal position.

While I have illustrated and described what I regard tube the preferredembodiments of my invention, nevertheless it will be understood thatsuch are merely exemplary and that numerous modifications andrearrangements may be made therein without departing from the essence ofthe inventions "I claim: l

1. In a recorder adapted to record condition designating'signals andstation designating signals transmitted over a signal circuit from apluralityof signal stations, the combination of a type drum, a'firstgroup of. type characters on said drum adjacent one end thereof fordesignating the conditionexisting at the signalling station, a secondgroup of numerical type characters on said drum adjacent to the otherend thereof for numericallydesignating the signalling station, first andsecond printing platens cooperating with said first and second groups oftype characters respectively, first and second electromagnets foractuating said first and secand printing platens respectively, feedingmeans for feeding a paper tape in a direction approximately parallelto'the axis of said type drum, selectingmeans responsive to said feedingmeans for selectlvelyllcontrolling the energization of said first andsecond ele'ctrornagnets, advancing means for advancing said type drumcomprising an advancing electromagnet, and relay means responsivetothe'signals transmitted over said signal circuit and controlling theenergization of said 'electromagnets, whereby in a first position ofsaid tape said first group of type characters impresses the conditiondesignating portion of the signalon said tape, and whereby in second,'third and fourth positions of said tape said second-group cf numericaltype characters impresses the hundreds, 'ten and units designation ofthe-signa'lling station on said tape.

said drum for numerically designating the station'transmittingthesignal, first and second printing platens cooperating with said firstand second groups of type characters respectively, first and secondelectromagnets for actuating said first and secondprinting platensrespectively, feeding means for feeding a paper tape in a directionapproximately parallel to the axis of said'type drum, selecting meansresponsive to said feeding means for selectively controlling theenerglzati'on 01 said first and second electromagnets,- advancing meansfor advancing said type drum comprising an advancing electromagnet, andcycling means cooperating with said selecting means and with saidelectromagnets whereby in one position of said tape said first group oftype characters impresses the condition designating portion of thesignal on said tape, and whereby in a plurality of other positions ofsaid tape said second group of numerical type charfor numericallydesignating a'cters ii'iipresse's the units and tensor rthe tens andhundredskiesignation' of the station-on saiid'tape." "T

*3. In a recorder adapted-"torccord condition designating signals an'dstation designating sis nals tran'snriflzted' over asignalrcircuit-iromiaiplw rality-of si'gha-l stations; the combinationota type 'dr'u'rnja first grbup of "type characters' on said drum" for'de'sig'natlng the condition existing at the station ftraiisir'iitting'tl'ie signal, a second group' of iiumericaityp -charaoters on said drumfor numerically designating "the station trans! 'iiiltt'ing signal,-flrst'ffihd second printing iplate'r'isc6operiitihg -Witli said--*flrs't and second groups =5: was characters respectiveiy; fiist andswineprintingelectro'magfieflsifdr actuating said first and secondpi'lnting phit'ens hespe'ctiv ely. ieedir'ig 'n'iearis Yer" feeding itaper" tape' in a1 hirectio'n aspreximate hsaranei to the axis "of sawtype drill-n; selecting means responsiye' to' staid*feedir'igdnean's"iorslectiiieiyeoiitipliing' the en- 'ergization 'ofsaid first and *seeor'id {printing electrd-m'agnetsl-adv'a noing meatsminimis ng said type d'r'u'r'n comprising anadv'ancin'g ele'ctror'nanet'. releasable holding r'nean's 'for -holding's'aid typedrufn '"in'dtsdifferenfladyand positions 'cor'npfis'iri'gaf-rieas'ing'eiecti-omi'zfgriet, a signal rlay'j es'pon'iiivb td saiEi signal andsewing todirectsigfiaflir ripiflses ta safu aavaiiciakbiec troinagf-iet,aEn'd'a' control rialay'i prisii're" to said signal relayiahd'ser"'i'r"ii1 g"-t) iidfitro sweetening s ate e i a iifik i i al et nmeans tofcont'rol tlie seltfctite ederiz'atioppqf said first "and se'cirfl p nting' e'lqtroinagriets, whereby in ifiifstfposition' ojfafitapefgaidjfirst s se s -insist designatingportion{otthe signalyinsaidtape, and 'si hcreby" tifiiidj ahd 'ff dfifih 1505i: 'tions 'ofsaid 1 tape snidsecondgfmififqf hunter-1"- cal type -ol iaractersirqpres sesfth'e undreds ten s desi natingi'sigrisis and ,station iiiesi i t i s I} dition existing t t'ii ig iniii e tatioii. as s first and"second printing piat nsf e s U rangingmeans for:, afdvanping.,,saiti,type ritium comprising an Lari iza'nping1electr magnet and meansresponsive to the signalsf transinitted ,oger

.m; numenihaidesisnatbn ,oi ime-signalling: station'flcnftheitape.

. 5. .ln aurecorderdadapted to record 1 condition mil) nals itransmittedover signal circuit connections irom a plurality of signal stations, thecombinationofia, meidrum, a first group of typecharacters on saididrum=ior designating the condition existing at the signalling station. asecond group ot'inumerical gtypecharacters on said drum for numericallydesignating the signalling station, first .and second printing platenscooperating withisaid first-and second groups of typecharacters-respectively, first and second .printing electronic-gustsfor: actuating said first and A second printing blatens'respectively;feeding means comprising ea'steppingielectromagnet and pawl and hatchetmedhanism actuated thereby for feedin a paper itape dn -a directionapproximately par: minimum adds of said typeidrum, seiector switch meansactuated-my said, pawl and ratchet #mechahi'sm iowaelectlvelyicontrolling the energization ofsaid ffirst andsecond printingvelectromagm'ets. advahcing'i'ineans'fcr advancing saidtype drumeompri'slng an' ativancing eleot'romagnet, releasable' hdlding-means forholding said type drum in its diiferent advanced =positions comprising areleasing electrom'agnet, and relay means responsite to' tne signalstransmitted .over said signal circuit notifications and controlling thetenerg'izaticinirsatd eieotromagnets,-whereby in one position offiaiwtape said first group' of type charaiitersfimpre'sses-itheconditiondesignating portion pi fthe signal on said tape and whereby in one or iother -po sitions of said tape separate from saidfii's'tqiamed positionsaid second group of numerical typecharacters impressesthenumericamesinatibii dfthe' ignalli'ng station onisaid ta A 7. T

' 6. lti' a rec-Greer adapted to record condition designatin'g signaisand station designating sigsalsa-sustained over a signal circuit from apluia i rty' 'i si'gnal stations; the combination of a type drifin'; afirst group "of type characters on taiaciiim'ior-uesi mtingthe conditionexisting at tlie slghaliingistation; asecond group of type characterscu-said drum for designating the statio'n traiiisrn ittiiigsign'aL-first and second printing-platens cooperating with said firstand grands or ty pe' char acters respectively, fanlti" se'eond printingelectromagnets for actuating sald first and second printing platensrespettiirelyxfeeding means comprising a stepping eIectroliiatit andpaw1and ratchet mechanism abttialtwfiierehy ior feeding a paper tape in aapproximately parallel :to the axis of s'aiiFt drum' and-selectorswitchmeans actuated? --said pawl and ratchetmechanism forselectivefifi'eontrolling the energization of said first tifid'iiecpndpririting electromagnets.

"iini a recereer adapted to record difierent groiipsdf-signals'transmitted over a signal circuit new; slg -nalstationg the combinationof a. type -drl'.1'ii"1', al-fi'r'st group of type characters onzsaid'drfuni-fdi 'recording one 'group of signals, a second 'ggohppfty'pecharacters on said drum for record- 'ihg"ir'ibtfir group ofsignal characters, first and second printingplatens cooperating withfirst and seesaw group's "(if --type characters respectively. first andsecond printing electromagnets for actuatiri g said fir'st and secondprinting platens respectively ji'eeding means comprising a stepping.,eiectromag net and pawl and ratchet mechanism ptiiatpditherehy forfeeding a paper'tape relatively to said type and selector switch.meansactiiaitedby said pawl and ratchet mecha- -nismiorf .selectiveiycontrolling the energization designating \signalsand station.designatingisig- 15 of ,said. first andsecond printing electromagnets.

8. In a recorder adapted 'to record condition designating signals andstation deslgnatingsignals transmitted over a signalcircuit from aplurality of signal stations, the combination of a rotatable type drum,means for feeding a paper tape to printing position relatively to'saidtype drum, a first group of type characters onsaid drum adapted to makeprinting impressions on said tape in designating the condition existingat the station transmitting the sign'aLa second group of type characterson said drumadapted to make printing-impressions on said tapeindesignating the station transmitting the signal, advancing means foradvancing said-type drum comprising an advancingelectromagnet;releasable holding means for holding said type drum in its differentadvanced positions'andlcomprlsing a releasing electromagnet, flrstandsecond printing platens cooperating with said first and second groups oftype characters respectively, first-and second printing electromagnetsioractuating said first and second printing platens respectively 'arotary selector switch comprisingwaistepping electromagnet, pawl and-ratchet -meohanism actuated thereby rotary cam means having unidirectional stepping motion imparted thereto by said pawl and ratchetmechanism,'selector-contacts responsive to said rotary cam meansiorselectively causing one of said printingelectromagnets to be energizedatone point in the printing cycle and the 'other, of said, printingelectromagnets to be energized atanother point in the printingcyc1e,'and relay responsive to the signalling station forcontrolling-theenen gization of said other electromagnets. gag

9. In a recorder adapted to record condition designating signals andstation designating signals transmitted over a .signaicircuit from aplurality ofsignal stations, ;the combination of-ta rotatable type drum,means for feedings. paper tape relatively tosaid;type,,dru.m,-,one,group;of type characters located on onepartof-said drum and adapted .to make printing impressionimnsaid tape indesignating the condition-existing at-the station transmittingthe;signal, i-another group of type characters located on anotherportion of said drum and adapted to make printing impressions on-saldtape in designating the particular station transmitting the signal;advancing means for advancing said type drum comprisingan advancingelectromagnet, releasable holding means for holding said'type drum initsdifi'erent advanced positions ;and -comprisin8; a. releasingelectromagnet, a plurality of printing-platens cooperating with saidplurality of groupsot type characters, a plurality of; printingelectromagnets for individually actuating said plurality 011 printingplatens; selector switch means comprising .a stepping electromagnet,pawl and ratchet mechanism actuated thereby, rotary cam means havingunidirectional stepping motion imparted thereto by said pawl. andratchet mechanisnnand selector contacts responsive to said rotary cammeans for selectively causing said printing electromagnets to beenergized at different times in the printing cycle. 1 a

10. In a recorder adapted to record condition designating signals andstation designating signals transmitted over a signal circuit from aplurality of signal stations, the combination of a rotatable type drum.means for feeding a redord receiving medium relatively to said typedrum, one group of type characters on one part oi said drum adapted tomake printing impres- 60 in? said plurality, of

natingethecondition existing at the station then transmitting; a signal,another group of type characters on another portion of said, type drumadapted to make printing impressions on said record receiving mediumindesignating the particulartstation which is thentransmitting the signal,aopluralltyjof printing platens adapted to coact withsaid'difierentgroups of type charactors-tin making the printing impressions, aplurality ,of; printing electromagnets;,- for ;indi vidually --actuatingsaid p luralitya-rof printing platens, and selector switchmeansucomprising arstepping -,e.lectromagnet, pawl and ratchet mechanismactuated therebyrmtary cam means havin u dir na s eppi m t on np rt dthereto by said;-pawl and ratchetmechanism, and l selector contact means5 responsive to said rotary: cam y means ,ior selectively causing itheenergization of.said;printing electromagnets to occur at diflferenttimes-in the printing cycle.

,1 1-. In a recorder adapted to recordcondition designating, signals andstation idesignatingrsigpals-transmitted over a signal circuit from aplurality. of signalrstations, the combination of ;a rotatable-typedrum, means ,for feeding-a paper tape relatively to ,said typeudrum,onegroup of type charactersomsaid drum adapted to make printingimpressions on said ,indesignating the condition existing at ,tliestation then transmitting thev signal, a,s ec ond group of type-characterson said drum adapted ,tomake printing impressions on said .tape .in,designating .the par- -ticular,station transmitting the signal, aplurality ogwpr inting.platensgcooperating with said difit' er nt,groupsljofjtypetcharacters, a plurality ot printin'g e1ectr magnetstor; selectively actuating: aidplurahtir .of printing platens, a rotary,s fictor-isp'itch -,i'or, ,selec'tively,-,;energizing said ,df erentprinting, electromagnets at different"times inane-printing cycle,andmeans re- ,sponsive to he signals ,transrnittedover. said (,1 isignal circuit for controlling said rotary selector jlg' airecorderadapted to record condition designating signals and stationdesignating sigtransinitt e, over, a signal ,circuit from a plurality otsignal ,,statlons,, the combination of arttatable typedriirn, means forfeeding apaper tppejreliitively tofsaid type drum. one group i fircharac ersn t a did um, adapted to ente p i ing ir'npr'esslons on'saidtape in desig- 'nat'ingthe condition existing at. the station thentransmitting the signal, a second group of type charaoterspn saiddrum'adapted to make print- 1ingfimpressions on said tape, indesignating the partic l r" statlon transmitting the signal, a pinral tof, p in nspletens cooperating with said different groups ot typecharacters, a plurality j oi: printing electromagnets for selectivelyactuatprintlng platens, a rotary selector switch for seleetivelyenergizing said i electromagnets for sions on said record receivingmedium in desig- "76 difi'ere nt printing electromagnets at diiferenttimes in the printing cycle, means responsive tojthe deenergization oione of said printing actuating said tape feeding means, andmeansrespopsive to signals transmitted over said signal circuit forcontrolling the operation of said rotary selector switch.

13. In a recorder adapted to make a printed record of signalstransmitted from a signalling mean.) the combination of a single typedrum operative to print the entire signal transmitted from saidsignalling station, said drum comprising a pluralityof longitudinallyspaced circular "rows of type characters, a plurality of printingplatens arranged whereby one of said platens is individual to each rowof type characters, feeding means for feeding a record receiving mediumbetween said type drum and said printing platens, said feeding meansfeeding said medium in a direction approximately parallel to the axis orsaid type drum, means for rotating said type drum to bring a desiredcharacter oi one of said rows of type characters into printing position,means for then actuating the printing platen corresponding to that rowto make a first printed impression, means for then restoring said typedrum to a normal position, means for actuating said feeding means forcausing a feeding motion of the record receiving medium following saidfirst printed impression, means for again rotating said type drum tobring a desired character of another of said rows of type charactersinto printing position, means for then actuating the printing platencorresponding to said latter row of type characters to make anotherprinted impression, means for again restoring said type drum to normalposition, means for again actuating said feeding meansto again feed saidrecord reoeivingjmediurn; and selecting means actuated substantiallyconcurrently with said feeding means for selectively controlling theactuation of said printing, platens.

14. In a recorder adapted to make a printed record of signalstransmitted from a signalling station, the combination of a single typedrum operative to print all of the elements of a si n transmitted fromsaid signalling station, said drum comprising a plurality oflongitudinally spaced circular rows of type characters, a plurality ofprinting platens arranged whereby one of said platens is individual toeach row of type characters, said type drum and printing platens adaptedto coact to make printed impressions on a record receiving tape disposedbetween said drum and platens, means for rotating said type drum tobring a desired character of one of said rows of type characters intoprinting position. means for actuating the printing platen corres ondingto that rowot type characters to make a first printed impression, meansfor then restoring said type drum to a normal position, means for againrotating said type drum to bring a desired character of another of saidrows of type characters into printing position, means for actuating theprinting platen corresponding to said latter row to make another printedimpression, means for again restoring said type drum to normal position,and means responsive to the actuation 01' one of said printing platensfor feeding the record receiving medium relatively to said type drum andprinting platen.

15. In a recorder adapted to make a printed record of signalstransmitted from a signalling station, the combination of a single typedrum operative to print theientire signal transmitted from saidsignalling station, said drum comprising a plurality of longitudinallyspaced circular rows of type characters, a plurality of printing platensarranged whereby one of said platens is individual to each row of typecharacters, feeding means for feeding a record receiving medium betweensaid type drum and said platens, means for rotating said type drum tobring a desired character of one oi said rows or type characters intoprinting position, means for actuating the printing platen correspondingto that row of type characters to make a first printed impression, meansfor then restoring said type drum to a normal position, means for againrotating said type drum to bring a desired character of another of saidrows of type characters into printing position, means for actuating theprinting platen corresponding to said latter row to make another printedimpression, and means for again restoring said type drum to normalposition.

16." In a recorder adapted to make a printed record of signalstransmitted from a plurality of signalling stations, the combination ofa single type drum operative to print the entire signal transmitted fromsaid signalling stations, said drum comprising a first circular row 01'type characters for designating the condition exist at the station thensignalling, and a second circular row of numerical type characters fordesignating the station transmitting the signal, a first printing platencooperating with said first row oi type characters, a second printingplaten cooperating with said second row of type characters, feedingmeans for feeding a'paper tape between said type drum and printingplatens in a direction substantially parallel to the axis of said typedrum, and mechanism responsive to said feedin means for causing saidfirst row of type characters to print the condition designating portionof the signal on the paper tape and for causing said second row of typecharacters to print laterally spaced numerical digits on said paper tapefor designating the station transmitting the signal, said lattermechanism causing said tape to be advanced parallel to the axis of thetype wheel between successive printing operations, whereby said singlerow of numerical type characters is operative to print hundreds, tensand units digits on the tape in a complete recording. cycle.

17. In a recorder, the combination of a rotatable type drum, a firstgroup of type characters extending around one portion of said drum, asecond group of type characters extending around another portion of saiddrum, feeding means for feeding a record receiving medium relatively tosaid type drum, means for making a printing impression between selectedtype characters on said drum and said record receiving medium, means foradvancing said drum from a predetermined normal position to a selectedposition for placing a selected one of the type characters of said firstgroup in printing position, means for restoring said type drum back tosaid normal position after printing said selected type character, andmeans foragain advancing said drum from said predetermined normalposition to a selected position for placing a selected one of the typecharacters of said second group in printing position.

JAMES R. HARRINGTON.

an? i W I

